The Sum statistic represents this metric, namely, the
total count of the 4XXError errors in the given
period. The Average statistic represents the
4XXError error rate, namely, the total count of
the 4XXError errors divided by the total number of
requests during the period. The denominator corresponds to the
Count metric (below).

Unit: Count

5XXError

The number of server-side errors captured in a given
period.

The Sum statistic represents this metric, namely, the
total count of the 5XXError errors in the given
period. The Average statistic represents the
5XXError error rate, namely, the total count of
the 5XXError errors divided by the total number of
requests during the period. The denominator corresponds to the
Count metric (below).

Unit: Count

CacheHitCount

The number of requests served from the API cache in a given
period.

The Sum statistic represents this metric, namely, the
total count of the cache hits in the given period. The
Average statistic represents the cache hit rate,
namely, the total count of the cache hits divided by the total
number of requests during the period. The denominator corresponds to
the Count metric (below).

Unit: Count

CacheMissCount

The number of requests served from the backend in a given period,
when API caching is enabled.

The Sum statistic represents this metric, namely, the
total count of the cache misses in the given period. The
Average statistic represents the cache miss rate,
namely, the total count of the cache misses divided by the total
number of requests during the period. The denominator corresponds to
the Count metric (below).

Unit: Count

Count

The total number API requests in a given period.

The SampleCount statistic represents this
metric.

Unit: Count

IntegrationLatency

The time between when API Gateway relays a request to the backend and
when it receives a response from the backend.

Unit: Millisecond

Latency

The time between when API Gateway receives a request from a client and
when it returns a response to the client. The latency includes the
integration latency and other API Gateway overhead.

Unit: Millisecond

Dimensions for metrics

You can use the dimensions in the following table to filter API Gateway metrics.

Note

API Gateway removes non-ASCII characters from the ApiName dimension
before sending metrics to CloudWatch. If the APIName contains no ASCII
characters, the API ID is used as the ApiName .

Dimension

Description

ApiName

Filters API Gateway metrics for the REST API with the specified API
name.

API Gateway will not send these metrics unless you have explicitly
enabled detailed CloudWatch metrics. You can do this in the console by
selecting Enable CloudWatch Metrics under a
stage Settings tab. Alternatively, you can call
the update-stage AWS CLI command to update the
metricsEnabled property to
true.